Quote:

Quote:

Basically a stock motor.
Mopar performance dissy adjustable set at 18 deg.with brown and silver springs.Timing set at 20 deg before. I set it with a vacuume guage and it idles realy good.
Rear carbs are factory 1/8 turned out on the idle screws.
6.5 power valve.
Jets in cenre carb are 63.
Car now pings when i step on it should i up the jet size to 65 what are others running or do i have to do something with the rear carbs.




Do you have the vacuum advance connected ? If so disconnect and try it again .




I agree I had a ping with my next sixpack engine last spring. I have a Mopar distributor. I disconnected the vac adv & ping went away.


1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.